feat: 新增验证码接口

ym-admin/src/main/java/com/cnbm/admin/controller/LoginController.java

@@ -2,9 +2,13 @@ package com.cnbm.admin.controller;
 
 import com.cnbm.admin.handler.LogoutSuccessHandlerImpl;
 import com.cnbm.admin.params.LoginParam;
+import com.cnbm.admin.service.CaptchaService;
 import com.cnbm.admin.service.LoginService;
 import com.cnbm.admin.utils.ResponseResult;
+import com.cnbm.common.exception.ErrorCode;
+import com.cnbm.common.validator.AssertUtils;
 import io.swagger.annotations.Api;
+import io.swagger.annotations.ApiImplicitParam;
 import io.swagger.annotations.ApiOperation;
 import lombok.extern.log4j.Log4j2;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -17,6 +21,7 @@ import org.springframework.web.bind.annotation.*;
 
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
+import java.io.IOException;
 
 /**
  * @Author weihongyang
@@ -31,6 +36,20 @@ public class LoginController {
     @Autowired
     private LoginService loginService;
 
+    @Autowired
+    private CaptchaService captchaService;
+
+    @GetMapping("/captcha")
+    @ApiOperation(value = "验证码", produces="application/octet-stream")
+    @ApiImplicitParam(paramType = "query", dataTypeClass=String.class, name = "uuid", required = true)
+    public void captcha(HttpServletResponse response, String uuid)throws IOException {
+        //uuid不能为空
+        AssertUtils.isBlank(uuid, ErrorCode.IDENTIFIER_NOT_NULL);
+
+        //生成验证码
+        captchaService.create(response, uuid);
+    }
+
     @PostMapping("/login")
     @ApiOperation(value = "登录")
     public ResponseResult login(HttpServletRequest request, @RequestBody LoginParam loginParam) {